Drafting appliance.



W. JACOBSEN.

DRAFTING APPLIANGB.

APPLICATION FILED FEB.14, 1913.

PatentedA Mar. 31, 1914.

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W. JAGOBSEN.

DRAPTING APPLIANGE.

APPLIGATIQN FILED FEB.14, 1913.

Patented Mar. 31, 1914 2 SHEETS-SHEET 2.

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1,092,167. Specification 0f Letters Patent Fatented Mar. 31, 1914. Application filed February 14, 1913. Serial No. 748,498. To all whom it may conc-cra: section. Fig. 11 is a sectional view of the lower portion of the marker shown in Fig. 10.

Throughout the following detail descrip Be it known that 1, WALDnnAn Jnoonsnn, a subject of the King of Denmark, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain tion and on the several figures of the drawnew and useful mproveinents in Drafting ings, similar part-s are referred to by like Appliances, of which the following is a reference characters.

Describing the invention specifically, A in the drawings denotes a base of any suitable form, preferably square and said base constitutes virtually a drawing board adapted to receive thereon paper, cloth, or other material which is to receive the drawing, plan, or diagram made by means of the invention. rlhe base A is formed at opposite specification.

This invention embodies an improved drafting appliance for facilitating the drawing of plans and the plotting out of diagrams of various kinds.

The essential object of the invention has been to produce an appliance of the class mentioned which has a comparativelyT wide range of use for drafting purposes and inedge portions thereof with guides the includes mechanism adjustable upon a ase, ner sides of which are somewhat undercut, and having marking elements of special as shown at Z) in Fig. 6, whereby the ends forms to meet the requirements. rIhe mechof a slide C may be interlockingly engaged anism referred to is adapted to operate with the guides. The extremities o the slide C are beveled slightly to correspond the latter supporting the with the adjacent portions b of the guides B.

above the base,

drawing paper, or other material upon which the plans, drawings or diagrams are Furthermore, a plate 1 is attached to the to be made. upper side of the slide C so that its ends overlap the guides B. The extremities of the plate 1 are tapered or pointed, and the yielding points 2 engage with notched plates rlhe invention is directed particularly to the general mechanism which will be hereinafter set forth quite clearly, and to the specific marking devices included in said inecha- 3 that are secured to the guides B. The slide nism, as well as other details of construction C is longitudinally slotted, as shown at C that will be understood more fully upon refand said slide is movable freely on the erence to the following detailed description, guides B to various points of adjustment beand the accompanying drawings, 'in which tween the upper an lower edges of the base A. ln its movement, the ends of the Figure 1 is a plan view of an appliance made in accordance with the invention, dotted lines showing the positions in which the carrier for the markers may be disposed by adjustment. Fig. 2 is a transverse seche line 2-2 of Fig. 1. Fig. 3

tional view on t is a fragmentary. bottom plan view of the slide C operate in frictional contact with the upper surface of the guides B The necessary pressure to create movement of the slide C is sufficient to cause the detent points 2 to pass from engagement with one notc to another of the plates 3. A fixed adjustprocured by the inter` carrier. Fig. 4 is a sectional view on the ment 'of the slide Gis line 4-4 of Fig. 1, looking toward the carlocking of the points 2 with the notches of rier, the base being broken away. Fig. -5 is the plates 3, as shown most clearly in Figs. a fragmentary view bringing out more 1 and 7. It is contemplated that the guides B shall be provided longitudinally thereof with graduations of measurement, according to any suitable system desired, these graduations being preferably in inches and fractions of inches.

Mounted upon the slide C is the carrier D. A plurality of line markers 4 are supported on the carrier D, said markers being pre erably arranged in two rows, as shown in the bottom plan view, Fig. B. The markers 4 really comprise elongated pens and the markers of each row are arranged so close clearly by enlargement, the mounting of the carrier upon its supporting slide, arm of the carrier being broken away and shown in section. .Fig 6 is a sectional view on the line 6-6 of Fig. 1. Fig. 7 is a plan view bringing out more clearly the form of the slide which pivotally and slidably supports the carrier. Fig. 8 is a sectional view bringing out more clearly the mounting of the compass upon the carrier. Figs. 9 and 10 are perspective views of certain markers, that in Fig. 9 having its filling cap shown in a row of auxiliary markers 4a which, for the l object markers. The markers 4a are of rec` to one another that, by actuation of any desired number of markers, a practically continuous line may be produced in performing a piece of work.

The detail construction of each marker 4 is shown clearly in Fig. 9, from which it will be observed that a tubular stem 5 extends upward from the marker, passing through an opening in-the carrier D. At its upper extremity, the stem 5 is provided with` i provided with a head 14 which is rotatably mounted in a socket member 15 slidable longitudinally of the slide C. The socket member 15 is formed with a tongue 16 of dove-tail form in section, see Fig. 4, and this tongue is snugly received in slots C of the slide D, said slots being of a shape correto engagethe head 14 1n order to. hold the 75 extends angularly with respect to theslide.

Cert-ain adjustments of the carrier D are illustrated in dotted lines in Fig. 1. 1 From the foregoing, it will be understood t at a very wide and adequate range of adjustment of the carrier D may be obtained in order to hold the markers in many differupper side of the Vcarrier D, see Figs. 2, 4 and 6. Normally the tension ofthe spring 7 holds the marker 4 in an upraised or inoperative position, subject to pressure, however, to bring the lower edge of the marker into contact with the material upon which the plan is being drawn. Each marker 4 is Y composed of sides adjustably connected by a suitable adjusting screw 8. y operation of the screw 8, the marker 4 may be adjusted for the formation of a thin or heavv line, as desired..

Associated with the several markers 4 is be supported in order to permit of the forma-- tion of lines in parallelism, or at Iangles with respect to the slide C. Furthermore,

the slide C, being adjustable entirely across the surface of the base A in spaced relation thereto, affords a further advantageous adjustment of the'marking elements. When the slide C and carrier D are properly adjusted, the operator has only to depress one or more of the markers 4, separately, or simultaneously, in order to produce a line of the desired length. If the plan lor drawing which is being executed requires the illustration of bricks, the markers 4 would prefer- 100 ably be operated, while, if the operator desires to illustrate a stone wall structure, the auxiliary markers 4a would preferably be used to imprintupon the drawing or surface Y carried by the base A the desired arrangepurposes of this description will be called tangular form, but may be made of different, shapes, said markers being designed to simulate an approximately rectangular stone, such as may be used in building construction. The body of each marker 4a comprises a holder in which an inking pad 4b is'arranged. The markers 4a are each provided with a stem 5 and fingerpiece 6, such as used in connection with the markers 4 and the springs 7 serveto maintain the markers 4a in their normal upraised positions. By removing the caps or finger pieces 6, that are preferably screw-threaded on the upper ends it will be evident that the carrier D may be of the stems 5 of the markers, it is quite easy rotated so as to utilize the same somewhat after the manner of a compass, the head 14 11o under such conditions, acting as a centering member.

pads 4b of the markers 4a. rlhe ink feeds from the markers 4 somewhat in the same manner as inthe operation of the ordinary drawing pen.

Provided longitudinally of the carrier D is a slot 9 and mounted in guides 10 at opposite sides of said slot is a slide plate 11 in which is depressibly mounted the compass 12. Said compass is held upraised by a spring 7 and is provided with a finger piece 6 at its upper end. The compass comprises a suitable centering point 12 and pen 12, the latter having a small ink supply reserduced. Furthermore, the socket member 15 voir`13. It will be apparent that the pen 12 is formed with circularly arrangedrgraduais adapted for movement lengthwise of the tions so as to determine the exact angular slot 9 and may be conveniently manipulated adjustment'of the carrier D in relation to in order to make circles, such as may be re` the slide or support C. quired in producing' a drawing or plan. The point l2 of the com )ass 12 Vis dee carrier D is peculiarly mounted, betachable whereby the pen of1 said compass ing formed wlth an oit-standing arm D may be used alone in a mannerY similar to the appliance in determining to a nicet-y 12o features of the plan which are being pro-- markers supported by the carrier,

the use of an ordinary ruling pen. This is necessarywhen making straight continuous lines, and the slide plate 11 forms a holder coperating with the member D in such a way that the latter virtually performs the function of a ruler when the pen 12 is moved back and forth under the conditions just referred to.

Having thus described the what is claimed as new is:

1. In a drafting appliance, the combination of a base, a supporting member mov able over the surface of the base, mounted upon said supporting member,

a conneccarrier and supporting member whereby the former is adapted to move in respect to the carrier, and means for operating each of the markers independently of the carrier.

2. In a drafting appliance, the combination of a base, uides at opposite portions of the base, a slide supported by said guides, a carrier adjustably mounted upon the slide, and markers movably mounted upon the carrier and operable independently of the latter.

3. In a drafting appliance, the combination of a base, ouides at opposite portions of the base, a sli e supported by said guides, a carrier adjustably mounted upon the slide, markers movably mounted upon the carrier, interlocking means between the base and the slide to hold the latter in adjusted position on the base, and means for holding the carrier in adjusted position on the slide.

4. In a drafting appliance, the combination of a base, said base, a socket member operating in the slotted portion of the slide, a carrier pivotally mounted on said socket member, and

invention,

tion between the a carrier a slotted slide supported onmarkers depressibly supported on the carrier.

5. In a drafting appliance, the combination of a base, a slotted slide supported on said base, a socket member operating in the slotted portion of the slide, a carrier pivotally mounted on said socket member, markers depressibly supported on the carrier, and means normally holding the markers in an inoperative position.

6. In a drafting appliance, the combination of a base, a slotted slide supported on said base, a socket member operating in the slotted portion of the slide, a carrier pivotally mounted on said socket member, a plurality of vertically movable markers mounted on the carrier, a marker slidably mounted on the carrier, and means for holding the carrier in adjusted position on the slide.

7 In a drafting appliance, the combination of a base, a supporting member movable over the surface of the base, a carrier mounted upon said supporting member, markers supported by the carrier, and means for holding said supporting member in adjusted positions with respect to the base.

8. In a drafting appliance, the combination of a base, a support movable across the base, means for pivotally and slidably adjusting said support, a plurality of markers carried by the support, and depressible toward the base, and means normally holding said markers in an inoperative position.

In testimony whereof I afix my signature in presence of two witnesses.

WALDEMAR JACOBSEN.

Witnesses:

I-I. C. ROBB, Gr. O. Rosn.

opies of this patent may be obtained for five cents each, by addressing the Commissioner o! Patents,

Washington, D. C. 

